"I did not read the email, notifying the change of the departure schedule," Ari Putro Cahyono, the head of the family, was quoted as saying by the Indonesian newspaper on Sunday.
AirAsia jet flying from Surabaya, Indonesia to Singapore, lost connection with air traffic control on Sunday morning. The plane carried 162 people on board, their destiny is still unknown.
The Indonesian National Search and Rescue Agency said the jet was caught in turbulence, requested a permission to change its course and crashed into the sea. However, the Indonesian Ministry of Transportation did not confirm the information, saying it was too early to make conclusions.